Hollow Composite Manufacturing via Integrated Molding and Curing

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Solution Overview

Problem

Current manufacturing processes for hollow composite materials are limited by the inability to use a wide range of constituent materials due to pressure and temperature constraints, resulting in insufficient curing and increased complexity and cost.

Innovation Solution

A process involving a die body with a complementary conformation to the desired article, which is laminated with composite material and subjected to high pressure and temperature, ensuring complete curing and allowing for the use of any constituent material, while being cost-effective and simple.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If high-pressure and high-temperature processes are used to ensure proper curing of composite material, then the strength of the manufactured article is improved, but the range of usable constituent materials is limited and the process complexity increases

Engineering Contradiction:
Improvestrength of manufactured articleVSAvoidrange of usable constituent materials
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The invention changes the pressure and temperature parameters during the molding process to enable proper curing of composite materials while maintaining hollow geometry. By optimizing these parameters within a controlled range, the process achieves adequate curing for various constituent materials without requiring excessively high pressures and temperatures that would limit material selection.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The process applies pressure and temperature in a predetermined sequence and combination during the molding operation. The composite material is subjected to these conditions simultaneously with the molding process, ensuring proper curing occurs at the right time to achieve both strength and hollow geometry without requiring separate post-curing steps.

Inventive Principle:
Principle #10Preliminary action

2Strength

If high-pressure and high-temperature processes are used to ensure proper curing of composite material, then the strength of the manufactured article is improved, but the process complexity and cost increase

Engineering Contradiction:
Improvestrength of manufactured articleVSAvoidprocess complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The invention combines the curing process with the molding operation into a single integrated process. The composite material is molded and cured simultaneously in the same equipment, eliminating the need for separate curing chambers or post-processing steps. This merging of operations reduces equipment complexity and process steps while maintaining the necessary pressure and temperature conditions for proper curing.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If pressure and temperature are reduced to simplify the process, then the process complexity is reduced, but the degree of curing becomes insufficient and the strength of manufactured products is significantly limited

Engineering Contradiction:
Improveprocess complexityVSAvoidstrength of manufactured article
Core Design Contradiction:
Device complexityVSStrength

Solution Approach 1:

The invention identifies and applies optimal pressure and temperature parameters that achieve sufficient curing without requiring excessively high values. By carefully selecting parameters within a moderate range and applying them in the correct combination during molding, the process achieves adequate curing degree for structural strength while keeping the equipment and process relatively simple.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the production of hollow composite articles with enhanced strength and geometry, using any material, at lower costs and with greater ease compared to existing methods.

Implementation Method 1

this type of process subjects the manufactured article to high-pressure and high-temperature processes that allow the composite material to polarize

Methodology Applied
Scientific EffectHigh pressure and high-temperature processes: Pressure Increase

Implementation Method 2

allow the composite material to polarize, so as to give the manufactured article particular strength

Methodology Applied
Scientific EffectCuring: Chemical Bonding

Data Source

PatentUS20250091302A1Process for the manufacture of hollow manufactured articles made of composite material
Publication Date: 2025.03.20 LAPIANA MASSIMILIANO
  • US20250091302A1 patent drawing
  • US20250091302A1 patent drawing
  • US20250091302A1 patent drawing

AI summary

A process for the manufacture of hollow manufactured articles made of composite material comprises: at least one phase of supply of a composite material for the manufacture of a manufactured article provided with one or more cavities; at least one phase of supply of at least one die body; at least one phase of supply of at least one mould provided with at least two valve bodies pressable under pressure against each other in order to define, interposed between the same bodies, at least one groove; at least one phase of arranging said die body inside said groove; at least one phase of interposing said composite material between said die body and said mould, inside said groove; and at least one phase of curing the composite material contained in said groove.